<!DOCTYPE html>
<html>
    <head>
        <title>在网页中直接使用 SVG 标签</title>
    </head>
    <body>
        <h1>Hello Nested SVG</h1>
        <p>
            <svg xmlns="http://www.w3.org/2000/svg" 
                width="200" height="200">
                <!--Face-->
                <circle cx="100" cy="100" r="90" fill="#39F" />
                <!--Eyes-->
                <circle cx="70" cy="80" r="20" fill="white" />
                <circle cx="130" cy="80" r="20" fill="white" />
                <circle cx="65" cy="75" r="10" fill="black" />
                <circle cx="125" cy="75" r="10" fill="black"/>
                <!--Smile-->
                <path d="M 50 140 A 60 60 0 0 0 150 140" 
                    stroke="white" stroke-width="3" fill="none" />
            </svg>
        </p>
    </body>
</html>